We don't know what causes uterine fibroids. Scientists have a number of theories, but none of these ideas explains fibroids completely.
Some factors researchers believed to be related to fibroid growth are:1,2
Other factors that may affect fibroid growth are:
It is likely that fibroids are caused by many factors interacting with one another. Once we know the cause or causes of fibroids, our efforts to find a cure or even prevent fibroids could move ahead more quickly.
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